Blaenau Gwent was a constituency in South Wales, that was represented in the House of Commons of the UK Parliament from 2010 to 2024 by Nick Smith of the Labour Party.

The constituency was created in 1983, twenty-three years after Bevan's death, from the upper part of the former Abertillery constituency, the town of Brynmawr from Brecon and Radnor, and Bevan's old Ebbw Vale seat with the exception of the area of the Rhymney Community (formerly Rhymney Urban District).

The then-Labour party leader Michael Foot, who had won Ebbw Vale in the by-election following Bevan's death, was the seat's first MP.

Until 2005, the constituency statistically ranked in the top 20 safest Labour seats in the country by size of majority and by continuous representation by candidates from that party.

[6] At the 2005 general election, the Labour Welsh Assembly Member Peter Law ran as an independent and won the seat.